module ChebyRuby::Differentiation

Module/Mixin for numeric differentiation methods. As of right now it is only mixed-in to @see [FiniteDifferencing] but will likely be mixed into more in the future.

Public Instance Methods

slope(func, a, b) click to toggle source

A crude method to calculate the “slope” of a function over the span of two points. The formula used is: <pre>(f(b) - f(a))/(b - a)</pre>

@param [UnivariateFunction] func the univariate function to be used. @param [Numeric] a one of the values in the domain of func @param [Numeric] b the other value in the domain of func @return [Float] the slope as described above

# File lib/chebyruby/differentiation.rb, line 15
def slope(func, a, b)
  (func.value(b) - func.value(a))/(b-a).to_f
end